function validate_cate_add(){
if (document.frm.name.value=="") {
	alert("Please enter desired category name.")
	document.frm.name.focus()
return false }
if (document.frm.des.value=="") {
	alert("Please enter desired category description.")
	document.frm.des.focus()
return false }
}
function validate_user_add(){
if (document.frm.username.value=="") {
	alert("Please enter desired username.")
	document.frm.username.focus()
return false }
if (document.frm.password.value=="") {
	alert("Please enter desired password.")
	document.frm.password.focus()
return false }
if (document.frm.email.value=="") {
	alert("Please enter user email address.")
	document.frm.email.focus()
return false }
if (document.frm.max_size.value=="") {
	alert("Please enter max image size in bytes.")
	document.frm.max_size.focus()
return false }
if (document.frm.max_count.value=="") {
	alert("Please enter max # of images user can upload.")
	document.frm.max_count.focus()
return false }
if (document.frm.access_cate.value=="") {
	alert("Please select apropriate category(ies) for user.")
	document.frm.access_cate.focus()
return false }
}
function validate_file_edit(){
if (document.frm.name.value=="") {
	alert("Please enter desired file name.")
	document.frm.name.focus()
return false }
if (document.frm.des.value=="") {
	alert("Please enter desired file description.")
	document.frm.des.focus()
return false }
if (document.frm.cate.value=="") {
	alert("Please select appropriate category.")
	document.frm.cate.focus()
return false }
}
function validate_file_ref(){
if (document.frm.file_url.value=="") {
	alert("Please enter file URL (including http://).")
	document.frm.file_url.focus()
return false }
if (document.frm.name.value=="") {
	alert("Please enter desired file name.")
	document.frm.name.focus()
return false }
if (document.frm.des.value=="") {
	alert("Please enter desired file description.")
	document.frm.des.focus()
return false }
if (document.frm.cate.value=="") {
	alert("Please select appropriate category.")
	document.frm.cate.focus()
return false }
}
function validate_file_hdd(){
if (document.frm.location.value=="") {
	alert("Please select file from your computer.")
	document.frm.location.focus()
return false }
if (document.frm.name.value=="") {
	alert("Please enter desired file name.")
	document.frm.name.focus()
return false }
if (document.frm.des.value=="") {
	alert("Please enter desired file description.")
	document.frm.des.focus()
return false }
if (document.frm.cate.value=="") {
	alert("Please select appropriate category.")
	document.frm.cate.focus()
return false }
var str=document.frm.location.value.toUpperCase();
var pos=str.indexOf(".ASP");
if (pos>=0)	{
	alert("ASP file uploads are not allowed.")
	document.frm.location.focus()
return false }

}